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Microgenia Edwini
''Microgenia edwini'' is a species of sea snail, a marine gastropod mollusk in the family (biology), family Raphitomidae. Description The length of the shell attains 4 mm, its diameter 1ΒΌ mm. (Original description) The small, solid shell is fusiformly turreted. It is reddish-brown and white spotted. The shell contains 5 Whorl (mollusc), whorls, the apical one white, smooth and mammillated, the second finely punctated like a thimble, third and fourth spirally and sharply carinated with two keels, a much finer one below. The body whorl is sharply keeled at the angle having eight spiral lines below, between the suture and the spiral keels very finely longitudinally striated. The Aperture (mollusc), aperture is small, ovate, brownish within. The Columella (gastropod), columella is whitish, nearly straight. The outer Lip (gastropod), lip is finely denticulated at the edge, contracted below. The posterior sinus is wide and deep. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
